Pressure determining method for air/exhaust gas-system of internal combustion engine of vehicle i.e. motor vehicle, involves calculating dynamic pressure portion, correcting static pressure portion and measuring total pressure

摘要

#CMT# #/CMT# The method involves setting up a model (4) for dynamic pressure portion (pydn) of pressure which dominant in an air/exhaust gas-system (10) at an installation location (A) of a pressure sensor (2) depending on known parameters of the air/exhaust gas-system. The dynamic pressure portion is calculated with the help of model. A static pressure portion (pstat) measured by a sensor and around the dynamic pressure portion is corrected. The total pressure is measured from the measured static pressure portion and the modeled dynamic pressure portion. #CMT# : #/CMT# An independent claim is also included for a pressure determining arrangement comprising a pressure sensor. #CMT#USE : #/CMT# Method for determining pressure in an air/exhaust gas-system of an internal combustion engine of a vehicle i.e. motor vehicle, for regulating and/or monitoring internal combustion engine, using a pressure determining arrangement (claimed). #CMT#ADVANTAGE : #/CMT# The method permits realistic and effective correction of dynamic portion of the measured pressure in the air/exhaust gas-system in a simple manner using existing standard sensor technology without changing the sensor system and the hardware of the system. The method enables optimized and much more reliable control and regulation of the internal-combustion engine without the need of constructional interferences in the sensor technology of the motor vehicle. The method performs appropriate adjustment in different motor vehicles and/or systems in a simple manner without any constructional change. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a standardized pressure sensor at an installation location in an air/exhaust gas system. pstat : Static pressure portion pydn : Dynamic pressure portion A : Installation location 2 : Pressure sensor 4 : Model 10 : Air/exhaust gas-system.